Pedal control of stop actions



, 1,641,166 P 1927' J. H. HAMMOND, JR

PEDAL CONTROL OF STOP ACTIONS Original Filed Aug 22, 1922 Svw eutoz Patented Sept. 6,- 1927.

UNITED STATES PATENT orrics.

JOHN HAYS HAMMOND, J'B., OF GLOUCESTER, MASSACHUSETTS.

PEDAL coN'rnoL or STOP ACTIONS.

Appficatien filed August 22, 1922, Serial no. 566,605. Renewed February 15, 1927.

This invention relates to the control of organs and'the like, and more particularly to the manual or pedal control of stop actions thereof. 6

Some of the objects of the present invention are to provide for controlling such stop actions by means convenient to the organists position or manual; to provide for selectively connectinga desired group of stops to the pedal or other device which controlsthe swell shutters to which the selected group of stops belongs; to provide for the successive actuation of desired groups of stops at the sametime that the swell shutters are opened; to provide for performing both of these functions when a single operating device is displaced; andto provide other objects as will appear from the following description taken in connection with the accompanying drawingsi'in which Figure 1 showsdiagrammatically so much of a pipe organ, and the electrical connections therefor, as is necessary to an understanding of the invention; Fig. 2 shows a side elevation of'a portion of the mochanism of Figure 1; and Figure 3 ma detail a view of one of the tablets of Figure 1.

Referring to Figure 1" the mechanism shown comprises two organs'll and 12 which are. respectively contained in .two swell V chests 13 and 14, the shutters of which are controlled by swell motors,'15 and 16; a bank of tablets 18'for controlling the stop actions of the two organs; and pedal ac:

' tion 20 and three groups of switching means 6 such as relays 21, 22, and 23. v

The organ 11 is composed of a group of eight stops 31 to 38 inclusive and the organ 12 is composed of six sto s 41 to 46 inclusive. The stops 31 to 38 o the organ 11 are connected by conductors 51 to 58 inelusive respectively to a corresponding plu rality of contacts such as 59 (see Figure 3) located rea rwardly of tablets 61 to 68 inclu-,

sive. Similiarly, stops 41to 46 of the organ 12 are connected by conductors 71to 76't0 contacts such as 59 located rearwardly of the tablets-8 1 to-86 inclusive The tablets are pivotally mounted upon arod 87 which is connected by, a conductor 88 to a battery 89;

The lower side of each of the tablets is provided with a similanmetallic strip such as which always makes electrical the conductor 88.

contact with therod 87 and when the asso oted to the shutters and which are connected by means of links 101 and 102 to the swell' motors 15 and 16 respectively. The. swell motor 15 is connected by conductors 104 to 108 inclusive to contacts 110 to 114 inclu;

sive. These contacts are rigidly. mounted upon the frame work 116. The swell motor '16 is connected by wires l18"to 122 inclusive to the contacts 125 to 12 9 inclusive,

extends from the swell motors 15 and 16 and from the stop actions of the organs. 11 and 12 to the, battery 89. Slidably mounted in which are rigidly mounted upon the frameif work 116. A common return conductor the framework 116 are two square rods 131" i and 132 made of any suitable insulating material and upon their upper ends "arefmount ed. two plates 133 and 134 of conducting material. Rigidly mounted upon the framework 116 and normally in contact with the conducting strips 133 and 134. are two contacts such as 135 which'are connected to A The rods 131 and, 132 are connected by links 137 and 138 to pedals.

139 and 140 which are loosely mounted upo n a transverse rod 141. upon the framework116 are three contacts 145,.146 and 147 which are connected by conductors 148, 149 and150 to three con-u tact s rings 151 152 ai1d 153 of the. relay 21. ne terminal of the winding of the relay 21 is connected tothe contact of a tablet 164 such as previously described. The other terminal of the winding is connected,

Rigidly mounted to the commonretu'rn conductor130 and" .152 and 153 of the relay 21 are connected I contact springs 184, 18 5 and 186 of the relay 22, the contacts cooperating witlrwhich'are,

contacts of the relay to close.

pedal 139 is depressed to operate the shut 'the common return conductor 130 to the battery 89, and the other terminal is connected to a contact of. a tablet 200.

Affixed to the framework 116 opposite the contacts 145, 146, 147 are similar contacts 211, 212 and 213, connected by means of conductors 214, 215 and 216 to contact springs of the relay 23. The contacts cooperating with these contact springs are connected to conductors corresponding to desired stops of the organ 12, such as conductors 72, 74 and 75 respectively. One terminal of the winding of the relay 23 is connected byway of the common return conductor 130 to the battery 89 and the other terminal thereof is connected to the contact of a tablet 230.

In the operation of the form of this invention shown in Figures 1, 2 and 3 the stops of the organ 11 are controlled by depressing the upper ends ofthe tablets 61 to 68, which when they are depressed, close the circuits through the conductors 51 to 58 and thereby energize the stop, action of the stops 31 to 38. The stops of the organ 12 are controlled in a similar manner by tablets 81 to 86. The shutters 90015 the organ 11 are operated by the swell motor 15, the action of which is controlled from the pedal 139, which when its upper end is. depressed causes the rod 131 to move down, thus bringing the plate 133 successively into engagement with the contacts 114 to 110; thus successively closing the circuits through the wires 108 to 104; which causes the swell motor 15 to move by steps, and opening the shutters in a step by step manner. The shutters 91015 the organ 12 are controlled by the swell motor 16,, which in turn is operated by the pedal 140 in a manner similar to that just described for the organ 11.

When it is desiredto control the group of stops 55, 53 and 57 by means of pedal 139,

the tablet 164 is depressed, which closes the circuit through the winding of the relay 21, thus operating the relay. This causes the When the ters 90, the contacts 145, 146 and'147 are successively engaged by the strip 133, thus closing the circuits through the stops 55', 53 and 57 in succession.

In a similar manner the stops 51, 58 and 54 are controlled from the pedal 139 by depressing the tablet 200, which operates the relay 22 as described for relay 21.

If it is desired to control the stops 42, 44 and 45 of the organ 12 from the pedal 140, the tablet 230 is depressed. This causes the operation of the relay 23 and these stops are connected to the contacts 211, 212 and 213 so that when the pedal 140 is depressed the conducting strip 134 successively engages these contacts, thereby energizing the stop action of the stops 42, 44 and 45.

It is evident from the foregoing description that when suitable tablets are depressed certain groups of stops of an organ will be successively thrown into action at the same time that the swell shutters of the organ are opened, both of these functions being simul- 7."; taneously controlled from the same pedal.

W hat is claimed is 1. In a musical instrument actuated by a fluid agent, a plurality of stops, means for controlling a desired number of said stops, 111? a swell shutter for controlling the passage of iiuid agent therethrough, and means including a pedal and an electro-magnetic relay operatively interconnecting said pedal with at least some of said stops for simultaneously controlling a predetermined number of the stops and opening the swell shut ter a proportional amount.

In a musical instrument actuated by compressed air, a plurality of stops, means for controlling a desired number of said stops, a swell shutter for controlling the passage of air therethrough, and means including a pedal and an electro-magnetic relay operatively interconnecting said, pedal with at least some of said stops for simultaneously controlling a predetermined" number of'the stops and opening the swell shutter a proportional amount.

8. An organ comprising stops, a swell W shutter, and means including a pedal and an electro-magnetic relay operative'ly interconnecting said pedal with at least some of said stops for throwing into operation a predetermined number of stops and opening the 105 swell shutter a proportional amount.

4. An organ comprisingstops, a tablet for controlling each of the stops, a swell shutter,

a motor for operating the shutter, a pedal for controllingthe shutter, control means including an electro-magnetic relay for operatively interconnectinga predetermined number of the stops and said pedal, and a tabletfor controlling the operation of said control means.

5. In a musical instrument operated by a fluid agent, the combination with a plurality of stops, means for controlling a desired number of said stops, means for transmit ting thereto a fluid agent for actuating selected ones of said stops, a swell shutter for controlling the volume of sound etl'ect-ively produced by the instrument, a motor for operating the shutter, a pedal for controlling said motor and control means including an 125 electro magnetic relay for modifying the action of said pedal with respect to certain of said stops.

6'. In a musical instrument, the combinat1on with a plurality of means for producing sound, a plurality of control devices for controlling the action of said sound producing means, means for variably controlling the volume of sound emitted, an electro magnetic relay for changing the sequence of op-,

successively a-plurality of pre-selected stops,

whereby the'volume of the produced music may be varied at a uniform rate.

8. In a musical instrument actuated by a fluid agent, a plurality of stops, a swell control mechanism, foot operated means for pre-selecting a sequence of stops and single means for varying said swell control mechanism and simultaneously operating said preselected sequence of stops, whereby the vol ume of the produced music maybe varied at a uniform rate. r

9. In an organ operated by compressed air, a plurality of stops, a swell control mechanism, a foot operated pedal for pre-selecting a sequence of stops, and a second foot operated pedal adapted to simultaneously vary said swell controlmechanism and operate in sequence said pre-selected stops.

10. In an organ adapted to be operated by compressed air, a plurality of stops, and a swell control .mechanism, a relay for controlling a pre-selected set of stops in a predetermined sequence, afoot operated pedal for simultaneously operating said relay and varying said swell control mechanism.

11. .In an organ adapted to be operated by fluid pressure, a pluralityof stops, and a swell control mechanism, a plurality of relays, each of said relays being adapted to operate a pre-selected sequence of stops,'an individual foot operated pedal for each of said relays and a master control pedal, said individual pedals being adapted to selectively connect said relays to said master pedal, said master pedal being adapted to simultaneously vary said swell control mechanism and to operate the pre-connected relay. In testimony whereof I hereunto aflix my signature.

JOHN HAYS HAMMOND, JR. 

